Apparatus

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sensors Mode-S transponder

781B58

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-650W · COMAC ARJ-21-700 Xiangfeng

Hex
781B58
Octal
36015530
Decimal
7,871,320
Country
CN
Tail
B-650W
Type
AJ27
No current signal · last broadcast 20h ago
Flights observed
58
Distinct callsigns
20
Country
CN
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 781B58.

Country allocation

The ICAO 24-bit address 781B58 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
CCA1117 - 6 2026-07-09
CCA1118 - 5 2026-07-09
CCA8140 - 3 2026-06-24
CCA1213 - 3 2026-07-17
CCA1142 - 3 2026-07-12
CCA1141 - 3 2026-07-11
CCA9506 - 2 2026-07-05
CCA9505 - 2 2026-07-05
CCA8192 - 2 2026-06-24
CCA8139 - 2 2026-06-23
CCA1559 - 2 2026-07-05
CCA1220 - 2 2026-07-17
CCA1219 - 2 2026-07-17
CCA1214 - 2 2026-07-18
CCA1150 Air China 2 2026-04-23
CCA1149 Air China 2 2026-04-23
CCA1111 Air China 2 2026-06-04
CCA9618 - 1 2026-07-02
CCA9617 - 1 2026-07-02
CCA9507 - 1 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CCA1214 - Jul 18, 03:10 UTCJul 18, 03:25 UTC15m
2026-07-17 CCA1213 - Jul 17, 23:35 UTCJul 18, 00:00 UTC25m
2026-07-17 CCA1220 - Jul 17, 10:40 UTCJul 17, 11:00 UTC20m
2026-07-17 CCA1219 - Jul 17, 07:05 UTCJul 17, 07:25 UTC20m
2026-07-15 CCA1270 - Jul 15, 10:05 UTCJul 15, 13:35 UTC3h 30m
2026-07-14 CCA1213 - Jul 14, 23:40 UTCJul 15, 03:50 UTC4h 10m
2026-07-12 CCA1142 - Jul 12, 01:40 UTCJul 12, 01:55 UTC15m
2026-07-11 CCA1141 - Jul 11, 23:05 UTCJul 11, 23:25 UTC20m
2026-07-11 CCA1930 - Jul 11, 17:35 UTCJul 11, 17:45 UTC10m
2026-07-11 CCA1929 - Jul 11, 12:40 UTCJul 11, 12:55 UTC15m
2026-07-09 CCA1264 - Jul 9, 14:30 UTCJul 9, 14:40 UTC10m
2026-07-09 CCA1263 - Jul 9, 11:05 UTCJul 9, 11:25 UTC20m
2026-07-09 CCA1118 - Jul 9, 06:05 UTCJul 9, 06:20 UTC15m
2026-07-09 CCA1117 - Jul 9, 03:20 UTCJul 9, 03:40 UTC20m
2026-07-08 CCA9507 - Jul 8, 22:25 UTCJul 8, 22:40 UTC15m
2026-07-08 CCA1214 - Jul 8, 03:20 UTCJul 8, 03:40 UTC20m
2026-07-07 CCA1213 - Jul 7, 23:50 UTCJul 8, 00:10 UTC20m
2026-07-07 CCA1220 - Jul 7, 13:35 UTCJul 7, 13:55 UTC20m
2026-07-07 CCA1219 - Jul 7, 10:00 UTCJul 7, 10:20 UTC20m
2026-07-05 CCA9506 - Jul 5, 15:00 UTCJul 5, 15:20 UTC20m
2026-07-05 CCA9505 - Jul 5, 11:05 UTCJul 5, 11:40 UTC35m
2026-07-05 CCA1559 - Jul 5, 04:10 UTCJul 5, 04:20 UTC10m
2026-07-05 CCA1142 - Jul 5, 01:40 UTCJul 5, 02:00 UTC20m
2026-07-04 CCA1141 PEK → DSN Jul 4, 23:05 UTCJul 4, 23:25 UTC20m
2026-07-03 CCA9506 - Jul 3, 14:05 UTCJul 3, 14:20 UTC15m
2026-07-03 CCA9505 - Jul 3, 10:20 UTCJul 3, 10:35 UTC15m
2026-07-03 CCA1559 - Jul 3, 04:55 UTCJul 3, 05:05 UTC10m
2026-07-03 CCA1142 - Jul 3, 01:25 UTCJul 3, 01:45 UTC20m
2026-07-02 CCA1141 PEK → DSN Jul 2, 23:00 UTCJul 2, 23:20 UTC20m
2026-07-02 CCA9618 - Jul 2, 13:10 UTCJul 2, 13:30 UTC20m
2026-07-02 CCA9617 - Jul 2, 10:40 UTCJul 2, 11:00 UTC20m
2026-07-01 CCA1118 - Jul 1, 15:25 UTCJul 1, 15:45 UTC20m
2026-07-01 CCA1117 - Jul 1, 12:40 UTCJul 1, 13:10 UTC30m
2026-06-30 CCA1118 - Jun 30, 06:30 UTCJun 30, 06:50 UTC20m
2026-06-30 CCA1117 - Jun 30, 03:10 UTCJun 30, 03:30 UTC20m
2026-06-29 CCA1117 - Jun 29, 12:39 UTCJun 29, 13:09 UTC30m
2026-06-28 CCA1118 - Jun 28, 15:09 UTCJun 28, 16:45 UTC1h 35m
2026-06-28 CCA1117 - Jun 28, 12:50 UTCJun 28, 13:04 UTC15m
2026-06-27 CCA1109 - Jun 27, 03:20 UTCJun 27, 03:30 UTC10m
2026-06-27 CCA1112 - Jun 27, 01:04 UTCJun 27, 01:24 UTC20m
2026-06-24 CCA8140 - Jun 24, 08:20 UTCJun 24, 08:39 UTC20m
2026-06-24 CCA8192 - Jun 24, 05:54 UTCJun 24, 06:15 UTC20m
2026-06-23 CCA8139 - Jun 23, 23:50 UTCJun 24, 00:09 UTC20m
2026-06-22 CCA8140 - Jun 22, 14:14 UTCJun 22, 14:40 UTC25m
2026-06-22 CCA8160 - Jun 22, 06:15 UTCJun 22, 06:25 UTC10m
2026-06-07 CCA8140 TSN → HET Jun 7, 08:00 UTCJun 7, 08:30 UTC30m
2026-06-07 CCA8192 DSN → TSN Jun 7, 05:40 UTCJun 7, 06:10 UTC30m
2026-06-06 CCA8139 HET → TSN Jun 6, 23:39 UTCJun 7, 00:05 UTC25m
2026-06-04 CCA1111 PEK → HET Jun 4, 15:05 UTCJun 4, 15:30 UTC25m
2026-06-04 CCA1118 DSN → PEK Jun 4, 07:50 UTCJun 4, 08:05 UTC15m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the B-650W page for operator, model, and routing details .

Mode-S 781B58 frequently asked

What is Mode-S code 781B58?
781B58 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-650W.
Where is Mode-S 781B58 registered?
Mode-S code 781B58 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B58 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B58, octal 36015530, decimal 7,871,320.
What flights does 781B58 operate?
Mode-S 781B58 has broadcast 20 distinct callsigns, including CCA1117, CCA1118, CCA8140, CCA1213, CCA1142.